Ukuphathwa kwamandla kwezixhumi ze-RF coaxial kuzokwehla njengoba imvamisa yesignali ikhula. Ukushintsha kwefrikhwensi yesignali yokudlulisa kuholela ngokuqondile ekulahlekelweni kanye nesilinganiso segagasi lokuma kwe-voltage, okuthinta umthamo wamandla okudlulisela kanye nomthelela wesikhumba. Isibonelo, ukuphathwa kwamandla kwesixhumi esijwayelekile se-SMA ku-2GHz cishe ku-500W, futhi ukuphathwa kwamandla okumaphakathi ku-18GHz kungaphansi kuka-100W.
Ukuphathwa kwamandla okukhulunywe ngenhla kubhekisela emandleni amagagasi aqhubekayo. Uma amandla okokufaka eshaywa, ukuphatha amandla kuzoba phezulu. Njengoba izizathu ezingenhla ziyizici ezingaqinisekile futhi zizothintana, ayikho ifomula engabalwa ngokuqondile. Ngakho-ke, inkomba yenani lomthamo wamandla ngokuvamile ayinikezwa izixhumi ngazinye. Ezinkomba zobuchwepheshe kuphela zemishini ye-microwave passive efana nezibambisi nemithwalo lapho umthamo wamandla kanye nenkomba yamandla esheshayo (ngaphansi kwama-5μs) izolinganiswa.
Qaphela ukuthi uma inqubo yokudlulisela ingafani kahle futhi igagasi elimile likhulu kakhulu, amandla athwalwa kusixhumi angase abe mkhulu kunamandla okufaka. Ngokuvamile, ngenxa yezizathu zokuphepha, amandla alayishwe kusixhumi akumele eqe u-1/2 wamandla awo alinganiselwe.
Amagagasi aqhubekayo ayaqhubeka ku-eksisi yesikhathi, kuyilapho amagagasi okushaya kwenhliziyo engaqhubeki ku-eksisi yesikhathi. Isibonelo, ukukhanya kwelanga esikubonayo kuyaqhubeka (ukukhanya kuyigagasi elivamile likazibuthe), kodwa uma ukukhanya ekhaya lakho kuqala ukucwayiza, kungase kubhekwe njengokuwuhlobo lwama-pulses.
Ukuze ufunde kabanzi ngama-antenna, sicela uvakashele:
Isikhathi sokuthumela: Nov-08-2024
